/*
 * Licensed to Elastic Search and Shay Banon under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Elastic Search licenses this
 * file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.elasticsearch.action;

import org.elasticsearch.ElasticSearchException;

import java.util.ArrayList;
import java.util.List;

/**
 * @author kimchy (Shay Banon)
 */
public class ActionRequestValidationException extends ElasticSearchException {

    private final List<String> validationErrors = new ArrayList<String>();

    public ActionRequestValidationException() {
        super(null);
    }

    public void addValidationError(String error) {
        validationErrors.add(error);
    }

    public void addValidationErrors(Iterable<String> errors) {
        for (String error : errors) {
            validationErrors.add(error);
        }
    }

    public List<String> validationErrors() {
        return validationErrors;
    }

    @Override public String getMessage() {
        StringBuilder sb = new StringBuilder();
        sb.append("Validation Failed: ");
        int index = 0;
        for (String error : validationErrors) {
            sb.append(++index).append(": ").append(error);
        }
        return sb.toString();
    }
}
